Interest Rate Swap Agreements Interest Rate Swap Agreements (Details) (Interest Rate Swap, USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Interest Rate Swap
Derivative [Line Items]
Interest rate swap, fair value	$ 908	$ 908
Amount of Gain or (Loss) Recognized in Other Comprehensive Loss on Derivative (Effective Portion)	$ 542	$ 542